Center-bearing-bolster attachment for car-trucks



(No Model.)

E. OLlFE. CENTER BEARING BOLSTER ATTACHMENT FOR UAR TRUCKS. No. 577,237.Patented Feb. 16, 1897.

i UNrTED STATES PATENT QFFICE.

EDWARD CLIFF, OE NEWARK, JERSEY.

CENTER-BEARING-BOLSTER ATTACHMENT FOR CAR-TRUCKS.

SPECIFICATION forming part of Letters Patent No. 577,237, dated February16, 1897.

Application tiled December ll, 1896. Seria-1 No. 615,278. (No model.)

vthe following is a specification.

The invention relates to an improved centering-bearing-bolsterattachment for cartrucks; and it consists in the novel features andcombinations of parts hereinafter described, and particularly pointedout in the claims.

The invention comprises a yielding center bearing applied to a part of acar-truck, said center bearing being'lin itself yielding and inclosingbetween its upper and lower parts a series of coiled springs, the upperpart of said center bearing being adapted to have a deiinite lateralplay under the action of the carbody.

The invention will be fully understood vfrom the detailed descriptionhereinafter presented, reference being had to the accompanyingdra-wings, in which- Figure l is a top view, partly broken away, of thetransverse beams or transoms of a cartruck having applied thereto theyielding center-bearing bolster constructed in accordance with andembodying the invention and, in addition, the yielding side bearings,which will be hereinafter specially referred to. Fig. 2 is a centrallongitudinal section of same on the dotted line 2 2 of Fig. 1, and Fig.3 is a transverse section of same on thevdotted line 3 3 of Eig. 1.

In the drawings, A B respectively designate the transverse beams ortransoms of a car-truck. In the present instance these beams or transomsA B are rolled I-beams and extend from one side to the other of thecar-truck, said sides being omitted from the drawings for the reasonthat the truck in itself forms no part of the present invention.

Centrally upon the beams A B is secured the center-bearing casing C,having the base plate or liange D, resting upon the said beams A B, andwithin said casing C are arranged the series of coiled springs E, whoselower ends will preferably be centered upon the annular flanges E,formed on the upper 'surface of the bottom of said casing C. Thevertical walls of the casing O receive the depending flange G of thecover or top H, which encom passes the upper portions of said springs E,and is provided with the inner annular anges I, which enter the upperportions of said springs E. The outline of the flange G on the cover Hsubstantially corresponds with the outline of the vertical walls of thecasing C, and said flange G passes within said walls, and, as will beobserved on reference to Eig. 1,the casing C and cover H are elongatedin outline and at their ends are rounded, While at a central point intheir parallel edges they are curved outward, as indicated in Fig. l atJ J. The parallel edges of the cover H and casing C are indicated by theletter K, and said edges, being parallel, guide the cover H in itslateral movement as well as in its vertical movement.

At the ends of the casing C and at theoutwardly-turned portions Jthereof there are left the spaces lettered L M, respectively, thepurpose of which is to permit the cover H to have a definite lateralmovement within the casing C under the thrust of the car-body. By reasonof the outwardly-curved central portions J of the casing C and cover Hthe force of whatever lateral thrust may be given to the cover H willnot be directly Wholly against the eXtreme end of the casing C, but willbe distributed between the end of said casing C and the oppositevertical walls of the outwardly-turned portion J of said casing.

The spaces L M, intermediate the cover H and vertical walls of thecasing C, not only admit of the said cover having a definite lateralmotion in either direction, but also permit said cover under the actionof the carbody to have a slight tilting motion. The parallel edges K ofthe cover H and casing C operate to guide the said cover as well as toprevent any twisting of the same. The central portion of the cover H hasthe raised circular bearing N to receive the bearing-plate on thecar-body, which is denoted by the line O, and at the center of saidbearing N is provided the sleeve P to receive the usual king pin or boltconnected with the car-body. The sleeve P also enters the middle springE and aids in retaining the same in its vertical position.

TOO

The center bearing above described receives the car-body and affords notonly a yielding support for the same, but one which may have, ifnecessary, a lateral movement and a tilting movement, and hence thebeams A B may be rigidly secured at their ends to the sides of thecartrucl;.

IVhile I do not limit this invention to the employment of side bearingsfor the carbody, I prefer to use the same in combination with yieldingside bearings also mounted upon the beams A B, one side bearing, asshown in the drawings= being located adjacent to each end of thecenterbearin g, in order that during any vtilting of the car-bodyitssides may have the support of said side bearings.

In the drawings the side bearings are lettered Q and each comprises thelower section R, secured to the beams A B, the upper section or cap Sentering said lower section R and the coiled spring T, which is inclosedbetween said lower and upper sections R S. The uppersection S of theside bearings Q is adapted to have a vertical yielding action upon thespring T, and in general respects the said side bearing Q is ofwell-known form, construction, and operation.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. For cartrucks having the transverse beams A, B, the center-bearingbolster com posed of the elongated casing C secured to the center partof said beams, the cover for said casing and the series of springsinclosed between said cover and casing, the central portion of saidcover being provided with the bearing and opening; substantially as setforth.

2. For car-trucks, the elongated easingsecured centrally upon the truck,the series of springs within said casing and the top or cover for saidsprings and casing, the edges of said cover and casin g substantiallycorresponding with one another and having the outwardly curved sideportions .I and parallel straight portions K; substantially as setforth.

For car-trucks, the center bearing, coinprising the casing secured to acenter part of the truck, the springs within said casingand the coverfor said springs and casing and having the bearing N and opening P,combined with side bearings secured to said car-truck at opposite endsof said center bearing; substantially as set forth.

4. For car-trucks, the center bearing comprising the casing secured to acenter part of the truck, the springs within said casing and the coverfor said springs and casing, said cover having the bearing N and openingI), combined with lthe side bearings at the ends of said center bearing,each side bearing comprising the lower section, the inclosed spring, andthe upper section adapted to yield vertically; substantially as setforth.

Signed at New York, in the county of New York and State of New York,this 10th day of December, A. I). 1896.

EDYVARD CIAIFF.

Witnesses:

GHAs. C. GiLL, E. J os. BELKNAP.

